Mill-liner.



if, E, J'OHNSON.

IvHLL UNER.

APPMCMION FILED MAY 2,7. |916.

/ MTOH/HIEVJ.

Patented Dec. 5, l19165.

l@ u are t le lie Application filed Mey 2'?, 193.6.

2b ZH whom t may concern: f

Be itv known that l, FRANK E. Qlonutsou, a citizen ot' the UnitedStates, and e resident of Salt Lelie City? in the county et Salt Lakeand Stelle of Utah, have made and invented certain. new sind usefulimprovements in ll/iilllliners, of which the follow ing is especiiicetien.

lli/ly invention relates to liners 'for tube, ball, and other types elfmills, and particulerly to that class of liners composed et de`taclialole lining nletee and sectional lifting' here,

lin practice, enel especially in mille Where lerge balls orpehhlee ereneed, it has been- 'tonnd that the eeeceding action causes Wear upon thereer surface ottheliif'ting here, es well, ee upon the liront sidesthereof, end elsel that the lifting bars are subject te terererd5 esWell ae reerweicd, thrusts, due to this cascading action.

is therefore en object oil the present invention to provide e linerwherein the weer sections of the lifting bars entend over both sides ofthe baeeeectione end coperate with the lining-plates., so ee tosuccessfully Witlietandeither forward or rearward thrusts and completelyprotect both sides oi the lease or filler section from weer.

A further object ie to provide e liner which is eo constructed. that themill can he reteted in either direction, and with ythe weer sections etthe lifting hars 'so designed that they may he reversed.

l further object is to provide a mill liner poeeeseingtlieabove-mentioned characteristics, in which the lining plates can stretchor elongate, Without danger or likelihood et bursting the mill shell lfurther object is to provide e mill liner in which the Wearing sectionset the lifting here may be easily removed or replaced, end,

when securely locked in position, aid in holding the lining platee inplace.

@ther objects and advantages will appear as the deecription proceeds,wherein it is to be understood that changes" in the precise embodimentof the invention can be made -Within the scope et Whatis claimed Withoutdeparting from the .spirit thereof. f

yll`he preferred embodiment of my invention is disclosed in theaccompanying drawinge, wherein.:

Figuiere l is e view in vertical eectiom ot e porion ci a mill equippedwith my ii proved liner.; F 2 is e detailed. view in perepective of oneol the lining plates; 3 is a detailed view in perspective of the hase orfiller section of the lifting hare; lti Ll is a` detailed view inperspective ci' the tot) Wear section of a lii'ting har.; lli 5 ie avieu' in section of a liner7 wherein the top weer section ci" eachlifting engages hut one of the adjacent lining1 plates; llig. 6 ie adetail view in section, of a liner which. is so constructed that thewear section of the litting bar is held iii place along; one et ge byone of the adjacent liningn plat Fig. 5.7 e fragmented view in Sectionet e liner 'Wherein the edgee of the lining" plates project up.y andforni a contil'unubimici ti e eifiee oi lthe weer sections of thelifting; bare is e fragniental view in vertical section et a linerwherein the sidee of the Wear sections of the liftinghars extend betweenthe edges of the adjacent lining plates; l? 9 is a view in .section of amill liner similer to that illustrated in ig. il, the filler har7 in thepreeent instance, being; et tregezoidal con! tour or outline. 1

Referring specifically to the several viewe, the mill liner is formedwith the detach-allie lining platee l0, the edges ll el -which thickento forni the ribs 15.2.. ,interposed he tween the lining?,` platee, arethe sectional lifting bars 13, which latter, ae the mill ie rotated,cause the contente cascade and Aproducethe required grinding; and pulvenming action Eachdifting har ie formed with heee or 'illerisection il:havingy beveled sides l5. El top Ywear Section l@ preferably formed ofsome hard weareresisting metal, such ae manganese steel, superposed uponthe heee section, and is formed with inclined sides i7, contacting andembracing both beveled sides of the hase section. rlhe hase and tepSections ofthe lifting bare are provided with registeril'ig),` openings1S, through which ein tend suitable bolts or other securingr nie-ens 19,resulting in the rigid securei'nent of the lifting' bars in place, andat the same time allowing them to he easily removed end the top or wearsections reverseclfor replaced, as may he necessiti-y,

rlille sides et the top or Wear eecti u the lifting hare extend flownto. eno

tect with, the Aloeveied eurtacee or 'new .lll

il, whichnre ilorined`et the" edges of the liniii.g`pletes,endaccordingly :iid in holding the lining plat-es in place. .The liningplates, 'while extending into close proximity to the buses ci 'the.lifting bers, stop short thereof, and" accordingly allow the liningplates to elongate or expend without subjecting the mill shell to severebursting strains. ldhile the holding action of the lifting bars mayalone be `relied upon to secure the lini g plates l0 in place, l haveillustrated the lining plates Iund the mill shell :is being providedwith openings 2l, through which errn tend suitable holding bolts 20,although the presence of these openings and the .use of these bolts muybe omitted if desired.

The liner disclosed in F ig. 5 is formed with the lining nietes 22, undthe sectional lifting bers 2i. rEhe base section 24 of euch lifting barreceives e weer section 25 thereon, the lutter being ci' somewhatirregular shape and including the overhanging sides 26H27, which embracethe sides oi the base section therebetween. rlhe rear side Q6 of theweer section projects outwardly and downwardly, und bears upon the toeend 28 of the adjacent lining plate, while the front side :22 of theweer section projects between the heel end 29 of the adjacent liningplute lend the bese section 2li of the lifting bnr. Although this typeof weer section may not be reversed, the mill muy be operated in eitherdirection, as the sides oi the weer section completely protect bothsides of the base section. 'l he bese section is accordingly protectedege-.inst the direct thrusts und weer resulting from lifting thecontents of the mill as the letter is rotated, and from the indirectaction resulting from the cascading of themill contents us it strikesagainst the opposite or rear side ci the lifting bar.

In some instances, it desirable that the liningl pieles cooperate tohold the lifting bars in "ece, and with this in View lr. provide :i sedisclosed in Fig. 6, wherein the mili 30 ci euch lining plate isprovided u ith on orerhunging ledge 3l, beneath which projects e iinnge32, carried by the' one side ci one weer section 31 of the lifting bnr3l-^ rl. base or liller section receives this top or y'eer section.thereon. The toe end oi the adjacent lining plete is enlarged to form :irib d6, between which, and the bose section the remote side oi the weersection projects.

`The .mod ed orinsoi mill liners illus treted in i', 8 and il, are used.where it is not essential that the lining plates and lifting berscoperuize to prevent their mutuel inwerd displacement. The form disclosed in Mg. 7 hes lling plates provided et their ed i areused andbevel-ed ribs Lil, th s iornnng e continuation of the o neces of thewear "life sides i3 or 'weer section 62 are correspondingly bevmomesIsubstantially rectangular in cross-section,-

and the sides 51 of the reversible weer Section 52 project nearly to theouter wall of, the base section und extend between the said" busesection and the adjacent edges of the lining plates A similarmodification is illustrated in Fig. 9, wherein the base or fillersection 60 is substantially trapezoidal in cross-section, and the sides(il of the top eled.

In euch of the various forms of liners above described, suitable bolts(not shown), similar to the bolts 19 illustrated in Fig. 1, are employedand extend through registering openings (not shown) in the weer und basesections of the lifting hars, :ind are secured to the mill shell, so asto hold 'the lifting bars rigidly in place, and ut the same time allowthem to be readily removed o1` reversed :is muy be desired.

What I claim is 1 A. liner comprising lining plates, lifting barsinterposed therebetween, seid lift ing bars 'formed with base sectionsand with 100 weer sections, said lining plates and lifting barscompletely housing seid base sections.

2, A mill liner comprising lining plates, lifting hers interposedtherebetween, `said' lifting bars formed with base sections spaced fromthe edges of the adjacent lining plates, and wear sections, mounted uponsaid base sections, secured thereto und projecting to opposite sidesthereof.

3. A mill liner comprising lining plates, lifting bui-s interposedtherebetween, said lifting bars formed with buse sections with beveledouter edges, and weer sections with inclined sides mounted upon saidbuse sections, extending down to, und contacting with, the adjacentlining plates und means for holding said bers in place.

el. A mill liner consisting of lining plates, lifting bers interposedtherebetween und formed with bese sections, and weer sections detuclmblymounted thereon und provided with spaced walls receiving the Suid basesections therebetween, und means for securing said lining plzites undlifting bars in place.

A millA liner comprising lining plates, lifting bers interposedtherebetween, suid ng bers consisting of buse sections, wear sectionsmounted upon snid buse sections and projecting thereabove, seid weersections 130 roirided with spaced sides projecting 'to oth sides of saidbase sect ions and embrac 5 allow the mill to be operat ed in bothdirec- 4tions, and means for anchoring said lining Vplates sind liftingbars in place.

bSigned at Chicago in the county of Cook and State of Illn A. D. 1916.V

ois this 24th day of May,

FRANK E. JoHNsoN.

NELLIE C. BAsoN, EARLA. LEINER.

Witnesses

